$171 Off

Powermaster 578068SPL GM CS144 Black Wrinkle 300A 12V Alternator

$171 Off

#255578068SPL

Powermaster 578068SPL GM CS144 Black Wrinkle 300A 12V Alternator

300 Amperage
Black Wrinkle Finish
12V Volt

Finish:

Black Wrinkle

$529.99

/each

Factory Shipped

$701.25

Save $171.26

Quantity

Need Help? Call to Order

Add to a list

Select a vehicle to verify Fitment

Select Vehicle

Product Summary

GM CS144 Alternator Case Style, Powder Coated

300 Amperage
Black Wrinkle Finish
12V Volt
Sold as Each

See more details

Key Specs

MFG. Part #	578068SPL
One Wire Alternator	No
Alternator Amperage	300 amp
Alternator Finish	Powder Coated
Pulley Style	6 Groove

See more specs

Need To Know

Need help?

855.313.9176

View the Help Center

Quick and Easy Returns

Return Policy

Powermaster 578068SPL Details

The Powermaster 578068SPL XS Volt™ alternator is a serious high-output charging solution built specifically for SPL competition vehicles that demand extreme electrical performance. Using a GM CS144 case with a black wrinkle powdercoated finish, this alternator delivers a massive 300-amp output and is designed to support high-draw setups where dependable power is critical. Its straight mounting configuration, internal regulator, and included 6-groove serpentine pulley make it a strong option for dedicated competition builds, but it is clearly intended for off-road or competition use only and is not for street-driven applications.

What really sets this alternator apart is Powermaster’s XS Volt™ voltage control system, which gives users the ability to fine-tune voltage between 13.5 and 18.5 volts. That makes it especially useful for specialized electrical systems running 12V, 14V, or 16V setups. It is capable of producing more than 300 amps at top end and over 140 amps at idle, helping support demanding audio competition systems and other high-load electrical accessories. Each unit is individually dyno tested and backed by a proof of performance guarantee, giving builders added confidence that it will perform as promised.

300 Amperage
Black Wrinkle Finish
12V Volt
Sold as Each

Application

Competition Only-Not for Street Use.

Specs

Alternator Case Style: GM CS144
Advertised Amperage Output: 300 amps
Output at Idle: 140+ amps
Output at Top End: 300+ amps
Voltage Compatibility: 12V
System Compatibility: 12V, 14V, and 16V systems
Adjustable Voltage Range: 13.5-18.5 volts
Mounting Style: Straight mounting
Mounting Length: 7.24 in.
Finish: Black wrinkle
Color: Black
Coating Type: Powdercoated
Pulley Included: Yes
Pulley Style: Serpentine
Pulley Size: 6-groove serpentine, 1.90 in. OD solid pulley
Belt Included: No
Regulator Included: Yes
Regulator Location: Internal
One-Wire Capable: No
High Output: Yes
Brackets Included: No
Remanufactured: No
Quantity: Sold individually
Intended Use: Competition only
Street Use: Not for street use
Testing: Individually dyno tested
Notes: Designed for SPL competition only

Guides & Documents

Alternators Installation Instructions (255578068SPL)

Installation Instructions (Powermaster)

Warranty (Powermaster)

Technical Information (Powermaster)

Warranty Information

Do not send the unit back to Speedway Motors unless you have called Powermaster and talked to their Tech Department while the unit was still on the vehicle so they could help you troubleshoot the problem.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

Powermaster 578068SPL Specifications

KEY SPECS
MFG. Part #	578068SPL
Brand	Powermaster
One Wire Alternator	No
Alternator Amperage	300 amp
Alternator Finish	Powder Coated
Pulley Style	6 Groove

GENERAL
Alternator Case Style	GM CS144
Regulator Included	Yes
Alternator Pulley Included	Yes
Alternator Brackets Included	No
Sold in Quantity	Each
GTIN Code	692209019299
Belt Included	No

Ratings & Reviews

Be the first to write a review.

Questions & Answers

Be the first to ask a question.